TABLE 5

Digenic epistatic QTL affecting hybrid breakdown of grain yield components–panicles/plant (PP), grains/panicle (GP), and 1000-grain weight (GW) of the Teqing/Lemont recombinant inbred population in two environments

QTLi Marker intervalQTLj Marker intervalQTL effect
LocationTraitChromosomeChromosomeLODaiajaaijR2 (%)
ZAUPP1RZ382–RG5322RZ273–RG1393.56−0.80***7.6
ZAUPP2RZ446a–RG6544G271–C9493.74−0.68***5.6
ZAUPP5R569a–RG1310RG752–RG1094f5.591.10***13.3
ZAUPP7RG29–G370b10RG1094f–C166.07−0.90***9.2
ZAUPP7RG30–RG2911G44–RG1094b5.530.83***−0.60**−0.81***7.7
ZAUPP2RZ386a–D07l 811RG1094b–RZ534.05−0.81***7.6
CNRRIPP1CDO348–CDO226a6G200a–RZ6677.07−0.69***6.5
CNRRIPP1RG472–RG44711RZ53–RZ7813.70−0.52***5.2
CNRRIPP4RZ590b–RG2148C1073a–G1874.570.52***5.2
CNRRIPP4RG1094e–Y1065Lc6RZ682–C2364.64072***7.2
CNRRIPP11RZ537b–RG1612RG901–G4028.34−0.36*0.94***11.9
ZAUGP2RZ260–RZ2732RZ386a–CDO7l83.93−0.29*0.43***6.3
ZAUGP2G1327–RG63411C975–RG10222.970.50***8.6
ZAUGP4Ph–G3796RG653–RZ5082.98−0.58***11.7
ZAUGP4C949–RG4497CDO385–C2854.14−0.29*q45***7.9
ZAUGP7RG678–G207RG29–G370b4.95−0.80***14.7
CNRRIGP2RG256–RZ26012RZ257–RZ797a6.740.55***10.1
CNRRIGP2RZ273–RG1393RZ284–RZ403b6.020.46***8.4
CNRRIGP3RG348a–C636x3CDO337–C944a5.45Q42***7.8
CNRRIGP4G379–RZ7407BCD855–CDO3853.31−0.37***6.9
CNRRIGP4G271–C94911RZ797b–RG1094d6.200.49***9.1
CNRRIGP6G1314b–HHU378C424b–RZ1434.22−0.23*0.36***6.7
CNRRIGP7C586–CDO4059R662b–G103a3.590.47***8.6
ZAUGW1RG811–R2106G1314b–HHU372.65−1.08***6.0
ZAUGW1C131–RG4724RG1094e–Y1065Lc3.09−1.18***7.1
ZAUGW2RZ599–RZ476b9CDO82–CDO226b4.021.28***8.3
ZAUGW3RZ403b–RG4823RZ474–C7463.40−1.27***8.2
ZAUGW3CDO795a–RZ4746C–G200a3.451.08***6.0
ZAUGW6C235a–G294d8RZ143–C8255.301.39***9.9
CNRRIGW1RZ14–C944b9CDO82–CDO226b3.890.42*0.75***8.3
CNRRIGW2RZ446b–RZ446a3G249–RG4183.59−0.49**5.3
CNRRIGW3G249–RG41811RZ536a–L457b5.200.84***9.3
CNRRIGW4RG143–G17712RG20q–RG91q3.84−0.60***6.6
CNRRIGW6RZ667–C235a10G89–G10844.18−0.37*0.85***9.5
CNRRIGW6RG653–RZ50812G1106–RG9013.83−0.96***10.6
  • ai and aj are the main effects of the loci i and j, arising from the substitution of the Lemont allele by the Teqing allele, and aaij is the epistatic effect between loci i and j, as defined by Mather and Jinks (1982). R2 is the proportion of the total phenotypic variation explained by the aaij. *Significance levels of P < 0.05. ** Significance levels of P < 0.001. *** Significance levels of P < 0.0001.